Patents by Inventor Kanryo Shimizu

Kanryo Shimizu has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Rotary shaft control system
    Patent number: 4282955
    Abstract: A control system for driving a rotary shaft and for positioning the shaft at a commanded position with one motor and two rotation transmission mechanisms of different ratios provided between the motor and the rotary shaft. The two transmission mechanisms are adapted to be selectively actuated to transmit the rotation of the motor to the rotary shaft. The rotary shaft is positioned at a commanded position using a feedback signal from a rotational position detector irrespective of which one of the two transmission mechanisms is employed.
    Type: Grant
    Filed: April 30, 1979
    Date of Patent: August 11, 1981
    Assignee: Fujitsu Fanuc Limited
    Inventors: Kanryo Shimizu, Kengo Kobayashi
  • Electro-hydraulic pulse motor
    Patent number: 4031811
    Abstract: This disclosure relates to an improved electro-hydraulic pulse motor wherein safety valves are arranged in hydraulic circuits provided for the hydraulic motor part of an electro-hydraulic pulse motor so as to release abnormal high pressure produced in the circuits due to sudden interruption of the operation of an electric pulse motor part of the electro-hydraulic pulse motor. As a result, breakage of the circuits or four way pilot valve part of the electro-hydraulic pulse motor can be avoided.
    Type: Grant
    Filed: January 19, 1972
    Date of Patent: June 28, 1977
    Assignee: Fujitsu Ltd.
    Inventors: Seiuemon Inaba, Kanryo Shimizu, Kohei Ito, Youichi Amemiya, Gotaro Gamo